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You can keep the look and functionality of your factory stereo, and still get outstanding audiophile sound with JL Audio's CleanSweep sound processor. It connects to your factory stereo's speaker lines and cleans up the stereo's output by sweeping away any processing from the stereo that could diminish the sound quality.

Many factory stereos use built-in equalization designed to make cheap factory speakers sound better, but this dressed-up signal can prevent aftermarket speakers from living up to their potential. The CleanSweep uses a 32-bit digital signal processor to remove the factory adjustments, then sends your external amplifiers a perfectly clean signal.

The CleanSweep connects to your factory radio's speaker wires, then takes the output of your factory radio and eliminates the peaks and valleys of the preset equalization, leaving a pure, unadulterated signal for your aftermarket amplifiers, speakers, and subs to work with. Your music will spring to life, with resonant lows, sparkling highs, and a realistic sense of depth and presence.

Keep all your factory radio functions
Since the CleanSweep attaches to the speaker wire outputs of your factory radio, it doesn't interfere with any factory radio functions like OnStar® or hands-free calling. Use the two sets of preamp outputs to connect your new amplifiers, and build your system from there. Best of all, you can take the CleanSweep with you when you purchase or lease a new vehicle.

Once you've connected the CleanSweep, pop the included CD into your stereo, and the CleanSweep corrects the equalization in as little as 20 seconds. You don't have to adjust anything  the CleanSweep utilizes its built-in 120-band digital equalizer automatically, without the need for external control devices. The equalizer settings are saved in the CleanSweep's memory, even if you disconnect the car battery.

Adds an auxiliary input
The CleanSweep not only improves your sound, it adds extra functionality to your system. The built-in auxiliary input lets you connect an extra source, like an iPod® or a plug-and-play satellite radio to your system, and enjoy the superior sound quality of a direct audio connection. A remote-mount volume knob lets you adjust system volume and select your auxiliary source. If you choose, you can still use the factory radio's volume, treble, and bass controls as well.

Accessories
The optional CL-SES source switch lets you expand the CleanSweep to accommodate up to three auxiliary sources. Some factory systems use more than just front and rear speaker outputs  if you have a system like this, you'll need to purchase the CL-SSI Signal Summing Interface to merge the different signals so they can be processed by the CleanSweep. Please call an Advisor at 1-888-955-6000 if you have questions about integrating the CleanSweep into your factory system.

Product Highlights:

system integration sound processor with automatic digital EQ

automatically equalizes output of factory stereo

speaker-level inputs (front and rear)

two sets of preamp outputs (front and rear) for connection to external amplifiers

Product Research

Features

Overview: The JL Audio CleanSweep CL441dsp OEM Audio
Interface with Automatic Digital EQ is a DSP-based solution that permits almost
any factory-installed audio system to serve as the source for a high-performance
aftermarket sound system while also providing input for an additional source of
your choice.

OEM Integration: The CL441dsp provides you with the following OEM
integration features.

Simple Installation: CleanSweep connects to your
factory-installed system as if it were a speaker so the possibility of
creating faults or diagnostic issues when the vehicle is serviced is
virtually eliminated. CleanSweep's installation is fully reversible because
there is no permanent modification of the factory system, and because
CleanSweep is not a vehicle specific interface, it can be easily integrated
into your next vehicle.

Auxiliary Source: With the CL441dsp, you gain the ability to add
an aftermarket source of your choice (iPod, satellite radio tuner, DVD
player, etc.) via direct line input, as opposed to inferior sounding
FM-modulator approaches. Since these signals are free of equalization,
CleanSweep will pass them without applying any correction. The master volume
control knob, when pressed, selects between the factory source and the
additional source unit. You can add more than one device with the addition
of the optional source selector switch (136CLSES, sold separately).

Automatic Digital EQ: The CleanSweep OEM Interface with Automatic
Digital EQ is a sophisticated digital audio processor that performs the
following functions.

32-Bit SHARC DSP Processor: CleanSweep applies the power of its
state-of-the-art, 32-bit SHARC DSP processor to automatically equalize each
of the four channels with 30 bands of equalization (120 bands total),
effectively correcting the response of almost any factory-equalized,
full-range signal. These digital-domain corrections will range from subtle
to dramatic, depending on the degree of equalization engineered into the
factory audio system. To accomplish this, you simply load the supplied
CleanSweep calibration CD into the factory-installed CD player, set its
volume control between 1/2 and 3/4 volume, play the designated calibration
track and then press the "Calibrate" button on the top of the CleanSweep
processor. Approximately 20 seconds later, the CleanSweep is finished
analyzing and equalizing the factory-installed source's response and stores
the corrections in non-volatile flash memory.

Analog-to-Digital-to-Analog Conversion: CleanSweep then converts
the digitally corrected signals back to analog audio and sends them out to
your aftermarket amplifiers through two pairs of low-distortion, 8 volt
(RMS) line-level outputs.

Master Volume Control: CleanSweep includes an intuitive rotary
user interface (a knob with stops at both ends) to control the master system
volume at the outputs of the processor unit for both the OEM (factory) and
auxiliary sources. The master volume eliminates the effects of any
equalization that is dependent on the OEM volume control position and allows
a high signal-to-noise ratio to be maintained in the system. When pressed,
the master volume knob also selects between the OEM and Auxiliary source. A
dash-mountable status LED changes color to indicate OEM or AUX input modes.
These controls can be easily mounted within reach of your driver's seat. The
unit features either a black or silver volume control knob to choose from to
match your vehicle's interior.

Turn-On Control: CleanSweep can be deployed in signal-sensing
mode, powering up and providing a 12-volt turn-on signal for your
aftermarket equipment whenever signal is detected. It can also be activated
by a conventional 12-volt trigger, if your OEM system provides one.

CL-LSA Loading Sensing Adapter: Included with the CleanSweep OEM Audio
Interface is JL Audio's CL-LSA Load-Sensing Adapter. The JL Audio CL-LSA
Load-Sensing Adapter is designed to present an appropriate impedance load to OEM
headunit or amplifier outputs that employ "load-sensing startup protection" when
used with JL Audio's CL441dsp CleanSweep OEM Audio Interface. When an OEM
amplifier or headunit employs this type of protection, it checks the impedance
of the connected load when the unit is powered up (expecting a speaker) and
mutes its amplifier outputs if a load outside of a predicted range is detected.
The CL441dsp's input impedance is outside of the range expected by some of these
types of systems and can cause the OEM headunit or amplifier to mute. When the
CL-LSA is inserted inline with the CleanSweep OEM Audio Interface's inputs, it
presents a safe and appropriate load to your OEM component and corrects the
muting behavior.

Connections/Controls/Indicators

Left Side Of Interface Module:

Power Connector: 4-pin connector used to connect the supplied
Power Connector harness which supplies Constant +12V, Switched +12V, Remote
Turn-On +12V and Chassis Ground. This Constant and Switched leads are
hardwired into your vehicle's electrical system while the Ground lead is
grounded to the chassis of your vehicle. The Remote Turn-On lead connects to
your aftermarket amplifier.

OEM Input Connector: The CL441dsp accepts up to four channels of
input from your OEM audio source via this 8-pin differential balanced plug
using the supplied OEM Input harness. OEM audio signals connect to this
connector must be close to full-range (20-20kHz). Otherwise, you will need
to connect the optional CL-SS1 (sold separately) to sum multiple filtered
OEM signals to full-range.

Control Connector: The module features a 6-pin port used to
connect the supplied wired remote volume control knob which allows you to
control the system's volume as well as select between your vehicle's OEM
inputs and the module auxiliary input.

AUX Input: The unit features a set of left/right RCA jacks for
connecting an external audio source to your factory audio system via RCA
cables (not supplied).

Signal Sense Switch: With this switch in the "On" position, it
allows the CL441dsp to act as a turn-on and turn-off controller fro your
aftermarket components in your system. You can also turn this feature "Off".

Top Panel Of Interface Module:

Aux Input Level Trim Controls: The interface is equipped with a
pair of level trim potentiometers that will permit you to level-match the
AUX source to the OEM level of your vehicle's audio system.

Calibrate Button: This button activates the calibration process
of the CleanSweep Interface once you have installed the unit, inserted
the supplied Calibration Disc into your factory CD player and set the
appropriate volume level and audio settings on your factory headunit.

EQ Defeat Button: This button defeats the unit's calibration
settings to allow you to listen to the difference in your factory system
with and without the digital audio processing of the CleanSweep.

Channel Status Indicators: The interface module features six LEDs
along the top panel which indicate the status and operation of the
CleanSweep unit.

Specifications

Electrical Specifications:

Operating Voltage: 9-16V DC

Standby Mode Current Draw: <2mA

Operating Current Draw: 0.5 A at 13.8V

Recommended Fuse: 1 A (Fast Blow AGC)

OEM Input Section:

Input Type: Differential-balanced with multi-pin jack/plug

Input Range: 100mV-30V RMS

AUX Input Section:

Input Type: Differential-balanced with dual RCA jacks

Input Range: 250mV-4V RMS

Digital Specifications:

Processor: 32 bit SHARC floating point DSP

Audio Resolution: 24 bit

EQ Bands: 120 (30 x 4 channels)

EQ Resolution: 1/3 octave from 25-20kHz

Output Section:

Output Type: Unbalanced RCA jacks

Maximum Output Voltage: 8V RMS (per output)

Output Impedance: 470 ohms

Signal-To-Noise-Ratio: >120 dB

THD: <0.01% at 20-20kHz

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2014 Dodge Ram 1500 Crew Cab

I initially went with the JL Audio XD700/5v2 Amplifier as it accepted speaker level inputs. The problem I ran into was Dodge tried to put a decent stereo in the truck even though I have the non Alpine system and the stereo sent more power to the Amp than it could step down and I got distorted flabby bass at the upper volumes. This device worked flawlessly to give me a nice clean signal that I could use low level inputs with. Keep in mind it sends a flat signal to your amps so if your an audiophile, you may not like the limited 3-band EQ the stereo provides after calibration. I use my radio volume rather than the master volume the kit provides. I have not experienced any hissing or other sound anomalies others have indicated

Pros:Calibrated easily with the 2014 Ram 8.4a Uconnect radio system (non Alpine), no hissing and sends clean signal to amps

Cons:A bit pricey and has no EQ controls. You will need a separate EQ or live with EQ on radio.

Poor results

Installed this product on a factory OEM head unit. Not impressed at all. Sound quality is nasally and there is a crackling like distortion at high volume levels similar to a poor signal from a radio station except this was on the CD. Will need to attempt to use the preamp from the head unit at this point as this will just not work.

It is convenient yes, but it's very similar to the cd players of old that could be connected using an RF signal to your car radio. Horrible sounding. If convenience is all you care about, this product does work but if you care about sound quality, stay away...

Pros:convenient for using stock head unit

Cons:sound is nasally and at loud volumes contains audible crackling like distortion

Crutchfield response on Monday, September 02, 2013We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

JL AUDIO CL441 DSP CLEANSWEEP

Written By n/a, providence, RI on Sunday, April 07, 2013

Install in 07 Camry with stock Radio non JBL system. Did not realize that the camry stock system was made for stock speakers, but I upgraded the front for Rockford Fosgate power component system pushing 100 rms to them and a 12" sub P2 in a sealed box for the bass pushing 250 rms. It did not sound right. Then I install the JL AUDIO CL441 DSP CLEANSWEEP and it really does work. Made all my music come alive with clarity.

Pros:Made my system sounded like a high end sound system.

Cons:u will need couple of day for the install and tuning your system if u have multiple amps installed. I wish it was just plug and play.

Much MUCH better!!

I had some High/Low converters and didnt have great sound. I talked to a buddy of mine who is REAL installer and he recommended this product. Tore everything out, rewired and the sound was a huge improvement!! I still have a little tweaking out of my crossovers and gains on the amps to make it perfect but I smack myself for not doing this the first time. The only issue I had was that my stock stereo has that "increase volume when loud in the cabin" feature. (sorry I couldnt think of what they cal it in my car) but if I gunned it - it would throw off the calibration. I turned that feature off and so far I havent had calibration issues. The only real install problem I had was where to mount it. So I drilled a 1 inch hole in the back of my glovebox, ran the wires through and mounted it in there.

Clean Sweep review

This takes a bit of work to install, especially in my 2005 Subaru Outback. The factory radio sounded like junk. I added four Polk Audio speakers and it sounded better but still kind of flat and muddy. After installing the Clean Sweep and a 4 channel amp the factory system now sounds amazing, I can't believe the difference. I now have an aux input as well which I wanted for some time. If your car has a system that is hard to replace than I highly recommend the Clean Sweep.

very nice

put it in a factory car it sound Great had to use the knob that it came with it claims that you don't need it but for what ever reason sounds better with it don't normally do reviews but I figure it might help somebody else recommend having a professional put it in trust me it'll save you a headache I have it hooked up to a five channel amp again it sounds great

Pros:sounds awesome make my factory radio sound great had no choice had to keep the factory radio if you are in the same boat I deathly go with it

Cons:when it's not on it makes it like a hissing noise is not that loud have to really listened. to hear it and again it's only when it's not on and who wants to have a conversation with the lady anyway haha

JL Audio CL441dsp CleanSweep®

Works good, Installed in my 2011 Subaru STI Limited with Navigation for a clean signal to a Boston 475 amp that powers 600C Alpine speakers. I set it up with the master volume knob then disconnected it and use to stereo volume. So far I'm happy with it.

not if you have steering wheel controls

Written By JJK, McKinney TX on Friday, November 19, 2010

To get the best performance out of the unit you must use the master control volume which comes with the unit, though the instructions say its not required. With that being said I tried running the system without the MCV hooked up and it sounds horrible. I called JL and they explained that the system must be calibrated with the MCV installed but you can remove it after the set up. The problem is the system is continually trying to correct the sound, which seems impossible. Long(and frustrating) story short, if you want to drill a hole in your dash and use the MCV without steering wheel controls I'm sure it works as advertised. If I knew then what I know now, I would have never bought this product.

Fixed all the flaws

After getting set up with a sweet amp and speakers from crutchfield, my '01 landcruiser still didn't really sound right and had a few rough edges. It had the NAV system so I couldn't replace the head unit and without cleansweep was advised to use the factory amp to drive the new Infinity kappa 5 amp speaker level inputs. Without Cleansweep, I had the following problems: terrible sounding factory eq settings that changed radically as a function of volume, a subtle but very un-pro popping noise on power up and power down, trying to strike a compromise in amp sensitivity: too low and lots of electronic hiss, too high and the amp would get overdriven and cut out at louder levels-there was no just right. But GREAT NEWS! I was able to replace the factory amp with Cleansweep (it accepted the very low level factory head unit signals with common gound). Cleansweep perfectly fixed each and every one of these problems and also gave me a clean aux input for analog ipod. System now sounds stunning, both quiet acoustic-vocals with my wife and cranking pop-rap with the kids! :D

JL Audio CL441dsp CleanSweep®

Written By Daniel, Corona, NY on Monday, May 26, 2008

I installed the CleanSweep after running out of options for my 2001 Saab Viggen. There were no aftermarket stereos for my car and no way to use my Ipod except for an FM connection which sounded lousy. I thought the Cleansweep could be the answer, but I wasn't sure. Since I had nothing to lose with Crutchfield, I bought one they had for $254 from their Scratch & Dent. You see, I hate to spend more than I need to, and I don't believe you necessarily get better sound from expensive equipment. With that philosophy in mind, I ordered the most inexpensive, good quality gear I could find which happened to be Kenwood speakers including one 12" sub with the Q-Logic enclosure that costs only $59. I paired the speakers with 2 Profile amps. One 4- channel and one 1-channel
TOTAL: $574
I have to tell you, at the end of the install before I inserted the calibration CD, I wasn't sure it would work, but it did, and boy, did I get awesome sound from this setup!
Could I have spent more? Sure. Would I have gotten better sound? Hard to believe. I'd say like the Master Card commercial, Cleansweep? Priceless!
Thank you, Cleansweep, and thanks again Crutchfield!

The final piece of the puzzle

Since I finally got rid of my old '90 Volvo, it has been an ongoing project to get the stereo just right in the new car. First I replaced the factory speakers with some nice Rockford Fosgates. Instant improvement. But then I wanted more. I put in an amp. And if you get an amp, you might as well get a subwoofer, right? Well, everything was fine but I always felt that 'perfect sound' was just out of reach. Now everything sounds fantastic and crystal clear. I'm hearing things I would normally only be able to hear when I'm blasting my iPod in my Sennheiser headphones. I initially put off getting a sound processor because of the price tag but it was definitely money well spent.

JL Audio CL441dsp CleanSweep®

This unit looks cool and all but it is hard too get all four channels to
calibrate I would recomend professional installation or a degree in
electrontics. No kidding.Crutchfield was great in taking this unit back for
me.What a great company to do bussiness with...

JL Audio CL441dsp

Sound quality is outstanding and am very happy. I can adjust the gains for the Aux channel. My satelite radio and Ipod sound as good as the CD player!

One item that you need to be aware of: If your radio signal doesn't have a bandwidth from 20-20kHz, you will need the channel summing device that they sell separately. Fortunately, my unit calibrated fine.

I also have the Rockford 3sixty.1 which is a good product as well, but the volume control has a known problem (at low levels, the volume jumps up and down sometimes). The 3sixty.1 doesn't have level adjustments for Aux channel.

Overall, the JL is better for quality, but doesn't have as many features as the 3sixty.1.